Home / 640,413,749.56-883,771,730.40-347,058,317.56

Finding the Fourth Proportional to 640,413,749.56, 883,771,730.40 and 347,058,317.56

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Solution

The fourth proportional to 640,413,749.56, 883,771,730.40 and 347,058,317.56 is: 478,940,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,413,749.56 : 883,771,730.40 = 347,058,317.56 : x
  2. Step 2: Convert to fraction form
    640,413,749.56/883,771,730.40 = 347,058,317.56/x
  3. Step 3: Cross multiply
    640,413,749.56x = 883,771,730.40 × 347,058,317.56
  4. Step 4: Simplify right side
    640,413,749.56x = 306,720,329,859,713,920
  5. Step 5: Solve for x
    x = 306,720,329,859,713,920/640,413,749.56
  6. Step 6: Final answer
    x = 478,940,887.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.